ATTINY43U-MU Atmel, ATTINY43U-MU Datasheet - Page 178

• Manufacturer Part Number: ATTINY43U-MU
• Description: MCU AVR 4K FLASH 8MHZ 20-QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY43U-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-MLF®, QFN
• Processor Series: ATTINY4x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 4 Channel
• For Use With: ATSTK600-TINYX3U - STK600 SOCKET/ADAPTER TINYX3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ii
ATtiny43U
8
9
10 Interrupts ................................................................................................ 57
11 I/O Ports .................................................................................................. 62
Power Supply and On-Chip Boost Converter ...................................... 36
System Control and Reset .................................................................... 48
7.1
7.2
7.3
7.4
7.5
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
8.10
8.11
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
10.1
10.2
10.3
11.1
11.2
11.3
Sleep Modes ....................................................................................................31
Software BOD Disable .....................................................................................32
Power Reduction Register ...............................................................................32
Minimizing Power Consumption ......................................................................33
Register Description ........................................................................................34
Overview ..........................................................................................................36
Modes of Operation .........................................................................................37
Output Voltage versus Load Current ...............................................................40
Overload Behaviour .........................................................................................42
Software Control of Boost Converter ...............................................................42
Component Selection ......................................................................................43
Typical Applications .........................................................................................46
Characteristics .................................................................................................46
Potential Limitations ........................................................................................46
Bypassing the Boost Converter .......................................................................46
Register Description ........................................................................................47
Resetting the AVR ...........................................................................................48
Reset Sources .................................................................................................49
Power-on Reset ...............................................................................................49
External Reset .................................................................................................50
Brown-out Detection ........................................................................................50
Watchdog Reset ..............................................................................................51
Internal Voltage Reference ..............................................................................51
Watchdog Timer ..............................................................................................51
Register Description ........................................................................................54
Interrupt Vectors ..............................................................................................57
External Interrupts ...........................................................................................58
Register Description ........................................................................................59
Introduction ......................................................................................................62
Ports as General Digital I/O .............................................................................63
Alternate Port Functions ..................................................................................67
8048B–AVR–03/09